The buck converter of the figure shown below has an input of 12 V and an output of 6 V. The load resistor is 4.8 A, the switching frequency is

100 kHz, L= 20 µH, and C= 100 µF. Determine the average source current.Select the one best answer from the choices given below. (a) 0.125 A (b) 0.250 A (c) 0.500 A (d) 0.625 A (e) 2.00 A